Autonomic
Suppose you've designed an electrically operated security system that includes sensors and activators. Signals are sent from sensors to an activator that sounds an alarm. This signal or message can be compared to impulses sent along autonomic nerve paths.
The autonomic nervous system is a division of the peripheral nervous system that contains sets of neurons which functions by receiving information from the environment and from other parts of the body. The autonomic nervous system controls involuntary body functions such as heartbeat, pupillary response, sexual arousal, blood flow, emotional response, breathing, and digestion.